Pre-heat oven to 180C/350F.
In a large pot over medium-high heat, bring a half cup of stock/broth to the boil. Lower heat and simmer.
Add garlic, chilli, onion and sweet potato. Cook, stirring, until sweet potato softens. As the stock evaporates, add half a cup more at a time.
Add broccoli and continue to cook, stirring, until broccoli softens.
Remove pot from heat and using tongs, transfer broccoli and half the sweet potato to 4 small ramekins/cookware bowls, dividing evenly.
Divide uncooked pasta evenly between the 4 bowls.
Return pot to heat and cook remaining half of sweet potato with a little more of the vegetable stock/broth until sweet potato is very soft.
Pour remainder of the vegetable broth into blender and add the sweet potato mix. Be careful not to burn yourself.
Blend on high until smooth.
Pour sweet potato 'soup' into the 4 bowls, dividing evenly. Be sure to push all pasta spirals down under the liquid to ensure it cooks well.
Sprinkle cheese evenly on top of the bowls.
Place the 4 bowls into the oven and bake until golden brown (about 20-25 mins).
In the meantime, return empty pot to stove top over medium heat. Add margarine, pine nuts and sage leaves and sauté until pine nuts are golden. Remove from heat and allow to cool.
Remove 4 bowls from oven, sprinkle them evenly with the pine nut & sage leave mix, and serve.